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Dedicated Subsystem WorkbenchPlatform Gen: 2009–2026

sms%3A6572176457 Yamaha Zuma 125 (YW125) Suspension Hydraulics, Fork Fluids & Sag Tuner

Front fork travel, rear shock travel, spring preload, damping click baselines, and dynamic rider sag calculator for sms%3A6572176457 Yamaha Zuma 125 (YW125).

Technical PassportOEM VERIFIED
Engine
125cc
Cooling
Liquid-Cooled (2022–2026) / Forced Air-Cooled with Fan Shroud (2009–2021)
Final Drive
Belt Drive
Engine Oil
0.90 L (0.95 US qt) [0.80 L without filter / periodic change]
Spark Plug
NGK CPR8EA-9
Front Tire
120/70-12 51L Dual-Sport Tread
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Gen 2009–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2009 through 2026.

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18 Production Years (2009–2026)
Suggested Items4 Verified Workshop Consumables Available for this Job
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Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)
U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).
Verify VIN on NHTSA.gov
No Active Federal Safety Recalls Reported
The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the sms%3A6572176457 Yamaha Zuma 125 (YW125) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.
OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin
Bulletin #FSB-YAM-ZUM-01Technical Service Bulletin FSB-YAM-ZUM-01: Unified Braking System (UBS) Cable Balancing, Final Transmission Oil Drain & V-Belt Wear Service
Source: Yamaha_Zuma125_YW125_Driveline_Brake_Service.pdf
Mandated Torques:Torque: 55 N·m (40 lb-ft) (Primary Fixed Sheave Nut)Torque: 50 N·m (37 lb-ft) (Secondary Sheave Clutch Housing Nut)Torque: 13 N·m (115 in-lb) (Final Transmission Gear Oil Drain Bolt)Torque: 20 N·m (15 lb-ft) (Engine Oil Drain Bolt - 12mm Hex)
Consumable Specs:Yamalube 4 10W-40 4-Stroke OilYamalube Final Transmission Gear Oil / 85W-140 GL-4Yamaha Bel-Ray High-Temp Assembly Grease
Genuine Part Numbers:5S9-E7641-00-005S9-E7632-00-0093210-14816-00
Yamaha Adventure ScooterZuma 125 (YW125)

Yamaha Zuma 125 Driveline, Final Transmission & Dual-Sport Chassis Architecture

110ml transmission gear oil (13 N·m), primary sheave 55 N·m, secondary sheave 50 N·m, 12" dual-sport tires, and rear axle 125 N·m.

YAMAHA YW125 CONTINUOUSLY VARIABLE TRANSMISSIONPRIMARY NUT: 55 N·mVARIATOR (11.0g)SECONDARY NUT: 50 N·mDRIVEN CLUTCHFINAL GEAR OIL: 110 mlDrain Plug: 13 N·m (10mm Hex)12" DUAL-SPORT120/70-12 (29 psi)WAVE ROTOR UBSCaliper: 23 N·m
Click on Primary Sheave, Secondary Sheave, Final Gear Oil, Dual-Sport Tires, or UBS Wave Brakes to view specifications.

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Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

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Subsystem Guide/fluids

Fluids & Capacities

Oil: 0.90 L (0.95 US qt) [0.80 L without filter / periodic change] • Coolant: 0.52 L (0.55 US qt) [2022+ Liquid Cooled models] • Brake: N/A

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

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Subsystem Guide/electrical

Charging & Battery

Battery: YT7B-BS

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Subsystem Guide/tires

Tires & Gearing

Front: 120/70-12 51L Dual-Sport Tread • Rear: 130/70-12 56L Dual-Sport Tread

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

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